Text and Data Mining valid from 2018-11-28
Received: 21 September 2018
Accepted: 19 November 2018
First Online: 28 November 2018
Compliance with ethical standards
: Michael J. Zvolensky, Lorra Garey, Nubia A. Mayorga, Andrew H. Rogers, Michael F. Orr, Joseph W. Ditre, and Natalia Peraza declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.